On Windows the name 'mmc' is also used for the executable for Microsoft
Management Console. For the MSVC port on the Windows command line we have long
provided a batch file named 'mercury' as an alternative to `mmc' in order to
avoid this clash. (Re-arranging your PATH to avoid the clash is not always an
option.)
Provide a shell script named 'mercury' that serves the same purpose elsewhere.
Its main use is to avoid the name clash on MinGW/MSYS, Cygwin etc., but
making the name available everywhere should avoid unnecessary changes in build
scripts and alike.
Document the issue with the name clash in the appropriate chapter of the user's
guide and also in the top-level Windows README file.
scripts/mercury.in:
Add a template for the 'mercury' script.
configure.ac:
Create the 'mercury' wrapper script.
scripts/Mmakefile:
Add 'mercury' to the list of scripts.
doc/user_guide.texi:
Add a paragraph describing the 'mmc' name clash on Windows and what
to do about it.
Unrelated change: ':' is no longer a module qualifier.
README.MS-Windows:
Point users to the relevant chapter of the user's guide for ways
to deal with the `mmc' name clash.
NEWS:
Announce the addition.
